package filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "Userfilter",urlPatterns = "/*")
public class Userfilter implements Filter {
    public void destroy() {
    }
    String privateThings[] = null;
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request = (HttpServletRequest) req;
        for (String url : privateThings) {
            if (request.getRequestURI().endsWith(url)) {
                if (((HttpServletRequest) req).getSession().getAttribute("user") == null) {
                    ((HttpServletResponse) resp).sendRedirect("/class_design/user/user_login.jsp");
                    return;
                }
            }
        }
        chain.doFilter(req, resp);
    }

    public void init(FilterConfig config) throws ServletException {
        privateThings = config.getInitParameter("checked").split(";");
    }

}
